PITF project on vector fields

You might have never heard about Flash or Action script technology. But once, there was no HTML 5 movie and we were required to use plugins like (real player) and then later Flash. Supported by a PITF (Presidental Instructional Technology Fellow Initiative) grant, I had worked with David Drew Mahfouda during the summer of 2004 on some multi-variable calculus projects in Flash. The projects were all written directly in Action script. Thanks to the Ruffle Flash player emulator the project can now be seen again. Here are some links.
Here was the project.